2015
DOI: 10.1007/s10563-015-9190-6
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Effect of Different Pore Structures on the Surface Textures of the Cu-Doped CeO2 Catalysts and Applied for CO Catalytic Oxidation

Abstract: By using mesoporous silica KIT-6 with different hydrothermal temperature as a template, Cu-doped CeO 2 catalysts with different pore diameters were successfully prepared. When KIT-6-50 (hydrothermal synthesis of mesoporous silica KIT-6 temperature was 50°C) and KIT-6-100 (hydrothermal synthesis of mesoporous silica KIT-6 temperature was 100°C) were employed as the hard template, the uncoupled sub-framework Cu-doped CeO 2 catalyst formed. When KIT-6-130 (hydrothermal synthesis of mesoporous silica KIT-6 tempera… Show more

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Cited by 10 publications
(7 citation statements)
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“…Our research group has continuously focused on the CuO@CeO 2 catalyst for CO catalytic oxidation. We have also prepared the mesoporous CuO@CeO 2 catalyst by using a hard template , . The CuO@CeO 2 catalyst exhibits perfect catalytic activity for CO oxidation, with a T 50 (the temperature at which the conversion is 50 %) of only 34 °C.…”
Section: Introductionmentioning
confidence: 99%
“…Our research group has continuously focused on the CuO@CeO 2 catalyst for CO catalytic oxidation. We have also prepared the mesoporous CuO@CeO 2 catalyst by using a hard template , . The CuO@CeO 2 catalyst exhibits perfect catalytic activity for CO oxidation, with a T 50 (the temperature at which the conversion is 50 %) of only 34 °C.…”
Section: Introductionmentioning
confidence: 99%
“…Besides these two La−O spectral peaks, there is another peak around 284 cm −1 appearing with higher sodium concentrations, which may be attributed to Na−O, as the vibrations of metal–oxygen are mainly detected in the range 150–450 cm −1 . One new peak in the Raman spectra at 560 cm −1 is ascribed to the oxygen vacancies that are introduced into the (La 2 O 2 ) 2+ layer to maintain charge neutrality if La 3+ ions are replaced with Na + ions . These Raman spectra show that sodium doping generated significantly more oxygen vacancies than non‐doped La 2 O 2 S. Notably, a slight change in peak intensity was observed on increasing Na doping ratios from 4 to 5, indicating the possibly of saturation of Na + in the La 2 O 2 S lattice.…”
Section: Resultsmentioning
confidence: 88%
“…Although the introduction of sodium was found to increase the degree of crystallization of La 2 O 2 S nanoparticles and enhance the stability of the corresponding La 2 O 2 S lattice, the activity of Na‐doped La 2 O 2 S catalysts is still very low for reaction temperatures below 550 °C. The presence of a redox couple in catalysts, such as CeO 2 (Ce 4+ /Ce 3+ ), has been reported to increase OSC by Na doping . We hypothesized that introducing iron(III) ions together with sodium doping would create an iron redox couple (Fe 3+ →Fe 2+ ), which, in turn, increases OSC owing to oxidation of Fe 2+ .…”
Section: Resultsmentioning
confidence: 99%
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